Heterocephalobus elongatus (de Man, 1880) Andrâssy, 1967

P. A. A. LOOF, 1971, FREELIVING AND PLANT PARASITIC NEMATODES FROM SPITZBERGEN, COLLECTED BY MR. H. VAN ROSSEN, Mededelingen Landbouwhogeschool Wageningen 71, pp. 1-86 : 26-27

Heterocephalobus elongatus (de Man, 1880) Andrâssy, 1967 .

Dimensions of ten females: L = 0.61-0.82 mm; a = 27-33; b = 3.7-4.2; c = 12-16; V = 62- 64; G ^ = 11-16; G ^ = 11-17; G2 = 4 - 5.

Two males: L = 0.64- 0.85 mm; a = 32 -35; b = 3.5 -4.4; c = 16- 18; T = 4 1 + 9 - 5 6 + 1 0.

Annulation of cuticle shallow and rather indistinct, measuring 1.7 JJL in middle of body. Lateral field with two wings (three lateral lines). In the female the posterior uterus seems to bear some gonad tissue; the total length of the posterior gonad is about 1.3 body widths. The postvulval part of the anterior gonad occupies 31- 56 % of vulva-anus distance. The postanal pulvillus is conspicuous. The rectum is widened anteriorly. Tail length equal to 3. 1-4.6 anal body diameters.

Male: Spicules 24 \i long. Two pre-anal subventral papillae, 1.4 and 4 anal body widths from the anus. A pair of adanal papillae; a subventral pair nearly halfway the tail (37-40 %); a lateral papilla at the same level (phasmid?); a subventral pair (in one specimen perhaps two) just before the terminus; a lateral pair at nearly the same level, and a lateral pair midway between the two mentioned.

Nerve ring and excretory pore opposite posterior end of corpus, at 63 - 68 % of neck length. Directly behind the excretory pore there is a narrow but distinct hemizonid.

Samples 3, 5, 7, 8, 10, 20, 21, 23, 25, 27, 31, 33, 37, 39, 44, 48, 52, 55, and 62.